Best speakers for $3000

I would look for the speaker that your amp can properly drive, is within your budget and most important - sounds best to you. 

But you really insist on my recommendation to add the growing list above, I'll be happy to give it you. 

The OP now has 17 suggestions on his short list.  And we do not even know what kind of amp he has or if it could properly drive any of what has been suggested.

Buying a speaker this way is akin to selecting a vacation destination while blindfolded and throwing darts at a map!